[muzani]

No. My 4 year old will bring up a book to me at 11 PM and force me to teach him how to read. My other child used to cry at 4 years old whenever she got second place, and that includes being the second person in the house to shower that morning. My eldest scores some of the highest grades in her school or district and that's mostly from us just giving her the resources she needs (books/tutors) when she's struggling with a subject.

My kids are already punishing themselves if they get an A. I feel like paying them for an A+ is just further punishment.

Sometimes we encourage them to enter competitions so they know it's okay to fail, as I want them to mentally fortify against failure as well.

I think it's important to celebrate though, just don't make it contractual. We normally take them out somewhere nice after exams are over. My daughter asked for overpriced pancakes, and she got really good grades that day, so we let her have the overpriced pancakes. They were not worth it (did I mention overpriced?), but it's the thought that matters.