Are there other clauses we can add, which address issues related to education, religious, or social activities?

You are free to add as many clauses as you wish, addressing as many issues as you wish, so long as they meet the requirements of a legal contract. As you might imagine, these clauses can be very complex and as detailed as you want to make them. Be aware, however, that clauses mandating religious instruction are difficult to enforce. Judges do not like to make decisions regarding religion.