87 is above average la, relax and take it easy. I also get your experience last year when my daughter was a P1 student. I remember that I blamed her very harsh after the first test results. Actually, she got 90+ already. But I was not satisfied at that moment.
After I opened a topic on BK, I got many advices from BK moms and knew that I was wrong to put so much pressure on such a little girl. So, I changed my attitude on my daughter and she was much happy and could get a good exam result finally.
We both add oil la, there is such a long long way to go