Background to the Study

As school population increases, class sizes also increase, the performances of students become an issue. According to Dror (2005), class size has become a phenomenon often mentioned in the educational literature as an influence on pupil’s feelings and achievement, on administration, quality and school budgets. In his words he noted, that class size is almost an administrative decision over which teachers have little or no control. Most researchers start from the assumption that size of the class would prove a significant determinant of the degree of success of students. In fact, with the exception of a few, many studies have reported that under ideal situation, class size in itself appears to be an important factor.
     Class size refers to an educational tool that can be used to describe the average number of students per class in a school (Adeyemi, 2008). This varies from country to country. Kedney (2009) saw it as a tool that can be used to measure the performance of the education system. In relation to size, Stepaniuk (2001) reported that the rational utilization of classroom space depends upon class-size. This in turn would depend upon the area of the classroom. He argued that there are approved norms of class-size, 40 pupils per class for grades 1 to 8 and 35 pupils per class for the senior classes; while the standard allocation of class space per pupil is 1:25 square metres. In this regard, Dean (2004) compared class-size in some countries and found that Turkey, Norway and Netherlands had class-sizes of 20 more; the UK, USA, Japan, Canada and Ireland had class-sizes of between 15 and 20 while France, Sweden, Denmark, Austria, Italy, Luxembourg and Belgium had sizes of below 15.
    In Nigeria, however, Okoro (2005) reported that the class-size in secondary schools ranges between 35 or40 students. He argued that few pupils per class are uneconomical, as they do not make full use of space, teachers and teaching materials. Adeyemi (1998) reported that average class-size influences the cost of education while capital cost could be reduced by increasing the average class-size in schools while Nwadiani (2000) argued that the higher the class-size, the lower the cost of education. He contended however, that most classrooms are over-crowded spreading resources thinly and thereby affecting the quality of education. Ajayi (2000) supported the viewpoints and argued that in order to control rising capital cost of education, the average class-size could be increased. These points were also supported by Toth and Montagna (2002) who reported that the increase in enrollment in many institutions which has become major concerns of students could definitely lead to an increase in class size. Commeyras (2000) however, disagreed with these arguments and reported that effective teaching seems impracticable for teacher educators having large class sizes of 50, 75, 100 or more. In terms of outcomes, Schultz (1963) classified the outcomes of education into two categories from the economic point of view. These are consumption and investment. Cohn (1975) referred to the consumption aspect as that related to benefits derived by students. He regarded the investment component as including a variety of outputs related to the enhancement of an individual’s or society’s productive skills. Thus, Blaug (1983) argued that the extension of education tends to raise the earnings of those who benefited from it. In this regard, Simkins (1981) reported that output “represents the immediate results of the system’s activities.” According to him, “the main outputs in education are expressed in terms of learning, that is, changes in the knowledge, skills and attitudes of individuals as a result of their experiences within the educational system.” He argued that the educational system is a productive system in the very sense that it produces outputs especially various forms of learning. He expressed that the components of the system could be represented in a model viz:
 Input       Process         Output. Explaining the model, he alleged that the various inputs are processed in the production of outputs. Examinations in Nigerian schools dated back to the advent of formal education. Since then examinations have occupied a central place in the Nigerian educational system .According to him, examination has been “the sole criterion of quality” in Nigeria and “once a higher percentage of the pupils pass their external examinations, the school is considered to be of a high quality.” The importance of examinations in Nigeria even extended beyond this point. This importance as entrenched in the Federal Government of Nigeria National Policy of Education was in the fact that all secondary schools should gear their programmes to meet the requirements of model, he alleged that the various inputs are processed examinations being conducted for the School Certificate. Toward this end, Fafunwa (1974) argued that “it is an educational truism that examinations control the curriculum and whoever controls a country’s examination system controls its education.”
    The WAEC Ordinance emphasized the importance of standards in its examinations. According to the Ordinance, standards must be such that the certificates awarded on the basis of performance in the examinations shall not represent a lower standard of attainment when compared with equivalent certificates of other examining authorities. These examining authorities were the Cambridge and London Universities Examinations Boards for the WASC and GCE examinations respectively. Although the SSC examination has replaced the WASC and GCE examinations in Nigeria it still uses the GCE ‘O’ & ‘A’ level standards as its norms since it was pitched between the ‘O’ & ‘A’ level standards. The pattern of grading candidates’ score in the examinations was such that the distinctions grade was represented by A1 to B3. The credit grade was represented by C4 to C6. The ordinary pass grade was represented by D7 and E8 while the failure grade was represented by F9. It needs to be mentioned however, that the distinction and credit grades are the only requisite qualifications for admissions into universities in Nigeria and candidates must have at least five credits in five subjects including English Language in order to qualify for admission .The foregoing review has shown that class-size is a controversial educational tool that has varied from one country to another.

Statement of the Problem
It has been observed that tertiary institution appear to be densely populated while lecture room  seem to be over-congested. It has shown the views of previous researchers on class-size in various countries. In view of the divergent opinions, the problem of this study was to determine what influence class-size had on the quality of output in University of Nigeria Nsukka.  This situation seems to be impairing effective teaching and learning process in higher institution and hence the reason for embarking on this project.
Purpose of the Study
The broad objective of the research project is to examine the effect of class size on students academic performance in Economics, with special reference to university of Nigeria, Nsukka
    The specific objectives are;
1.    To examine the impact  of  class size on the academic performance in economics.
2    To examine how negative effects of class size on academic performance of Economics students in University of Nigeria Nsukka,  could be brought to minimal.
3    To examine how quality class size helps in improving the efficiency and Effectiveness of teaching and learning of Economics
Research Questions
The research seeks to answer the following questions that affect the effective teaching and learning of Economics among undergraduate students in university of Nigeria nsukka.
(1)    “Is there any difference in the achievement in Economics for Tertiary Instituttion  students in small and large sized classes?
(2)     Is there any interaction effect between location of school and class size in the achievement in Economics
(3)     Is there any significant difference between the quality of output of students in schools having an average small class-sizes and the quality of output of students in schools having an average large class-sizes in Univeristy of Nigeria Nsukka.
(4)    What is the impact of class size on Economics teachers' productivity in Tertiary Institution
Delimitation of the Study
       The study is specifically talking about the impact of class size on students academic performance in economics in university of Nigeria nsukka. The study will concentrate on the effects of class size on the teaching and learning of Economics in Unveristy of Nigeria Nsukk.
Significance of the Study
    The Nigerian education system is progressively becoming more and more complex.  But the catalogue of sources shows that Nigerian tertiary institution s is over congested and thereby leads to a decline in the teaching and learning of Economics.
    Based on this, the research work contains the researcher’s contributions that would be of help and useful to education policy planners, Educationist, Ministry of Education authorities, Stakeholders, school administrations and management in senior schools towards helping  students to improve the quality of facilities in the education system.
Apart from the above, the research will provide valuable information on the influence of different interacting factors on the effects of class size on the teaching and learning of economics among economics students. The content of the study will also serve as resource materials for others who want to carry out further research.


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