Around 18.00 mark when Clark Kent is looking towards Lana and Ian who are talking, a girl in a green top leans against the locker behind Clark, then reads a book. About 10 seconds later in the next shot the same girl with the green top again leans against the locker behind Clark then reads a book.
Dams are Government property and you can't just drive across them without passing a checkpoint first.
There would be no legal reason for the meter maid to give Lex a parking ticket unless he parked in front of a fire hydrant, disabled parking space, or any other kind of space that would warrant an illegal parking violation.
If the principal thought Frankel was sick, he wouldn't have canceled the class, he would have had to find a substitute instead.