Can I search for parents with x kids?

Yes, e-maktab keeps a count of number of kids registered per parent. As an admin if you need to search for parents with lets say 3 kids registered you can do that.

Click on Parents menu on the top, on the right hand side there are many filters, amongst them one if called students count. Type in a number and click on filter. See image below.

If any parents who have 3 kids registered they will all be listed.