The Best Secondary Schools in Isiolo County 2010 Filter Year 20102009200820072006 #Rank School County No. of students Mean Grade No. of As 1 Isiolo Boys Secondary School Isiolo1186.000 2 Isiolo Girls Secondary School Isiolo1055.220 3 Merti Secondary School Isiolo254.500 4 Garbatula High School Isiolo724.270 5 Kinna Secondary School Isiolo414.100 6 Merti Muslim Girls Secondary Isiolo194.000 7 Macci Girls Secondary School Isiolo134.000