Columbia subject headings:
Harvard subject headings:
Educational change--Bangledesh--Case studies.
Educational change--Colombia--Case studies.
Educational change--Ethiopia--Case studies.
Elementary schools--Bangladesh--Case studies.
Elementary schools--Colombia--Case studies.
Elementary schools--Ethiopia--Case studies.
Princeton subject headings:
Case studies.
Education, Elementary--Case studies.
Educational change--Case studies.
School improvement programs--Bangladesh.
School improvement programs--Case studies.
School improvement programs--Colombia.
School improvement programs--Ethiopia.