Sorry if this post doesn't is messy or doesn't make sense I'm not good at long posts I just want to get this out to atleast someone. Maybe I'll just clear things up later

All of this started ever since my mom had me enrolled in a "special stem class" in highschool. I didn't want to since I don't believe myself to be smart at all but the only requirement was that I had to have  a grade of at least 85 for every subject which I could easily manage so I didn't say anything.

But somehow my first year was really hard. It's not that school was hard, I just couldn't do my assignments and projects. I became really anxious about my scores that I couldn't get myself to do any of them. I just end up having to rush them quickly by the end of the quarter or not doing them at all. It didn't help that whenever I start doing schoolwork I start to doubt myself and feel ashamed.

Currently it's nearing the end of the first quarter as my second year in this class and I have so many missing assignments to do and I really want to get them done but I'm too scared to even open up Google Classroom/Messenger (we still have online classes) to face my stupidity. I have even put off/missed some end of the Quarter Tests.

I don't know if there's a problem with me or that I'm just lazy and stupid. Sometimes I feel like I'm just making up excuses and I should just get off my ass and work. What do I do? How do I escape these feelings?