Development, Validation and Standardization of Integrated Science Achievement Tests for Junior Secondary Schools by N. INYANG and O. JEGEDE


This study reports the development. trial testing. validation procedures, refinement and standardization of test items that could be used in the formative and summative assessment of integrated science at the junior secondary school (JSS). The development was necessitated
by the felt need to fill the vacuum created by the absence of empirically developed standardized test items for the implementation of the continuous assessment in science classrooms. Using a table of specification that incorporated cognitive levels and all the JSS
integrated science core-curriculum themes, a set of 1290 four-option multiple-choice items were generated. trial tested and validated using a sample of 766 students from selected junior secondary classes in Zaria area. Further validation and standardization was done using selected norms with a sample of 2800 students selected using stratified random sampling in Akwa Ibom State.
The result indicated that a bank of valid, highly reliable and standardized test items which teachers and organizations could use for assessing cognitive outcomes of their integrated science students has emerged. The study has also provided normative data based on class, gender and school location for the tests. The implications of the results of the study and suggestion for further research have been discussed.


Inyang N. E. U. and Jegede, O. (1991), “Development, validation, and Standardization of Integrated Science Achievement Tests for Junior Secondary Schools.” Journal of Science Teachers Association of Nigeria (JSTAN), 27(1), April, pp. 21-29.

Prof. Nsedu Inyang

Professor N.E.U. Inyang has always been a teacher. He started as an Assistant Science Master at Duke Town Secondary School, Calabar. From 1976 till date he has taught in various institutions. He was appointed Acting Head, Department of Science Education in Uniuyo from 1994-1998 and promoted Associate and full Professor of Science Education in 1999 and 2002 respectively. He has taught undergraduate courses in Science Education, supervised undergraduate projects and jointly supervised Masters and Ph.D dissertations and theses both in University of Uyo and during his sabbatical leave to Nnamdi Azikiwe University, Awka.

Prof. Nsedu Inyang served in various capacities in the Science Teachers‘ Association of Nigeria (STAN) at both State and National levels. It was during his tenure as Chairman of Akwa Ibom State branch of STAN, He that Akwa Ibom State Branch was adjudged the best branch of the year for an outstanding membership among other achievements. Prof. Inyang served the Akwa Ibom State Government as a resource person at various workshops for primary and secondary school science and mathematics teachers.

Prof. Nsedu Inyang has been engaged in a number of Editorial services. He jointly published Integrated Science Workshop proceedings on the Integrated Science Curriculum in the 3 3 system Secondary Education in 1981. He jointly edited a book of readings on science and society 1997. He is editorial adviser of the integrated Science Education series of Integrated Science Panel of STAN and an author of the Basic Science of the University Press Plc, Ibadan, Nigeria.

To date, Prof. Nsedu Inyang has 45 publications to his credit made up of 22 journal articles and 23 book chapters, many of which can be accessed on this knowledgebase. He attended and presented several the keynote addresses and lead papers at conferences, some of which includes Teacher’s Day in 2009 at the Akwa Ibom State rally of NUT and a motivational talk at the Mobil/NNPC/Akwa Ibom State Science quiz, facilitated by the Akwa Ibom State Branch of STAN etc.

Prof. Nsedu Inyang has played a number of leadership roles in his christian life. He is happily married and is blessed with successful children.
His personal knowledgebase and website can be accessed via

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