School,Classroom,Y,D,Y_clustermean,D_clustermean
1,1,0,4,1,5
1,2,1,5,1,5
1,3,2,6,1,5
2,1,2,6,3,7
2,2,3,7,3,7
2,3,4,8,3,7
3,1,3,7,4,8
3,2,4,8,4,8
3,3,5,9,4,8
4,1,7,11,8,12
4,2,8,12,8,12
4,3,9,13,8,12