Examine the logical coherence between the following educational funding models and their constitutional rules regarding religion:
1. Evidence 1: A public high school is 100% financed and wholly maintained out of the state budget. Inference 1: Therefore, the administration is strictly prohibited from providing any religious instruction to the students.
2. Evidence 2: A private trust runs an educational institution but receives a 20% financial aid grant from the state government. Inference 2: Consequently, this institution is also completely barred from conducting any religious instruction on its premises.
3. Evidence 3: A student attends an institution recognized by the state that offers optional religious classes. Inference 3: The Constitution dictates that the student can only participate in these classes if they offer voluntary consent.