Answer:
30 elementary students
Step-by-step explanation:
There are 13 households with 1 child
There are 11 households with 2 children
There are 4 households with 3 children
There is 1 household with 4 children
There are 0 households with 5 children
There is 1 household with 6 children
There are 0 households with 7 children
Therefore, there's a total of 13+11+4+1+0+1+0=30 elementary students