Foriegn studies https://www.researchgate.net/publication/296846222_A_STUDY_OF_WEB_PORTAL_FEATURES_A S_A_KNOWLEDGE_MANAGEMENT_SYSTEM_IN_SCHOOL_EDUCATION https://www.irjet.net/archives/V4/i1/IRJET-V4I1315.pdf http://inpressco.com/wp-content/uploads/2015/04/Paper69976-980.pdf https://www.researchgate.net/publication/285584334_DESIGN_AND_IMPLEMENTATION_OF_AN_ ONLINE_PORTAL_REGISTRATION_A_CASE_STUDY_OF_NATIONAL_OPEN_UNIVERSITY_OF_NIGERIA_DAMA TURU_STUDY_CENTRE https://www.ijedr.org/papers/IJEDR1603051.pdf
Local studies https://www.papercamp.com/essay/132701/Student-Portal-Chp-1