Search	Results	Search Terms
# 17	503	#16 OR #14
		Indexes = SCI‐EXPANDED, SSCI Timespan = 2015‐2017
# 16	8	#15 AND #13 AND #12
		Indexes = SCI‐EXPANDED, SSCI Timespan = 2015‐2017
# 15	29	(TI = (“class size*”))
		Indexes = SCI‐EXPANDED, SSCI Timespan = 2015‐2017
# 14	503	#13 AND #12 AND #11
		Indexes = SCI‐EXPANDED, SSCI Timespan = 2015‐2017
# 13	2,073,907	#9 OR #8 OR #7 OR #6 OR #5 OR #4
		Indexes = SCI‐EXPANDED, SSCI Timespan = 2015‐2017
# 12	75,716	#10 OR #3
		Indexes = SCI‐EXPANDED, SSCI Timespan = 2015‐2017
# 11	10,953	#2 OR #1
		Indexes = SCI‐EXPANDED, SSCI Timespan = 2015‐2017
# 10	67,485	(TS = (student* OR pupil*))
		Indexes = SCI‐EXPANDED, SSCI Timespan = 2015‐2017
# 9	826,667	(TS = (intellect* OR develop*))
		Indexes = SCI‐EXPANDED, SSCI Timespan = 2015‐2017
# 8	151	(TS = (“intellectual Development”))
		Indexes = SCI‐EXPANDED, SSCI Timespan = 2015‐2017
# 7	1,030,786	(TS = (school OR perform* OR achiev*))
		Indexes = SCI‐EXPANDED, SSCI Timespan = 2015‐2017
# 6	1,658,747	(TS = ((learn* OR develop* OR perfrom* OR achiev* OR abilit* OR outcome* OR improve*)))
		Indexes = SCI‐EXPANDED, SSCI Timespan = 2015‐2017
# 5	1,335,501	(TS = ((academic* OR performance* OR achiev* OR abilit* OR outcome* OR improve*)))
		Indexes = SCI‐EXPANDED, SSCI Timespan = 2015‐2017
# 4	1,863,667	(TS = ((learn* or develop* or perform* or achiev* or abilit* or outcome*)))
		Indexes = SCI‐EXPANDED, SSCI Timespan = 2015‐2017
# 3	17,143	(TS = ((primary school*) OR (elementary school*) OR (secondary school*) OR (middle school*) OR (junior high*) OR (“middle schools”) OR (“elementary schools”) OR (“secondary schools”) OR (“junior high schools”)))
		Indexes = SCI‐EXPANDED, SSCI Timespan = 2015‐2017
# 2	2,439	(TS = (“class size” OR“classroom environment” OR“crowding” OR“flexible scheduling” OR“small classes” OR“teacher student ratio”))
		Indexes = SCI‐EXPANDED, SSCI Timespan = 2015‐2017
# 1	8,715	(TS = (class size*))
		Indexes = SCI‐EXPANDED, SSCI Timespan = 2015‐2017