I sincerely hope that the original poster was writing tongue-in-cheek. But I'm afraid she wasn't...
By her own admission, she decided what time to arrive and what to bring. Uh, what happened to preparing a little in advance and being polite enough to arrive in a timely manner?
She admits to bringing the minimum of equipment, and not particularly well-maintained tools, either...
Then she wonders why the teacher takes her for an uncaring dilettante? And she complains about the teacher's attitude??? Wow.
Sorry to sound harsh, but I honestly don't think the teacher is to blame here.