Today is my first day of high school life.It's very well!Jus

整体时态有点问题,你写的是日记,过去发生的事情应当用过去时.
修改建议如下
Today was my first day of high school life.It's very well on the whole!
It was a little boring because taechers just made some requirements.
There will be a baseline test tomorrow.