Readings & Meanings:
On the midterm, he got the highest points in the class.
Even if the times are changing, do not forget the knowledge of the simple and modest samurai.
ぎょうにんべん is on the left. I don't think we've talked about 彳 before.
It's ironic that the 彳 kanji alone apparently means "stop, linger", because the 彳 as a radical emphatically means "movement, action, go go go." Think of 行く whenever you see 彳.
On the right of 得 you see 貝 in a minimized form on top, and 寸 on the bottom. 寸 means measurement, but it's a symbol of a hand exerting pressure.
Now, what's 貝 doing in this? 貝 as we know it now is kanji for "shellfish." Long ago, in ancient times, shellfish was used as currency. Therefore, 貝 came to be used to symbolize commodities.
(Think of the now-unpopular slang for dollars: "clams.")
Put it all together: Action: shellfish in the hand: receiving goods.
Another way to remember that 得 uses the Gyouninben radical (彳) is to think in terms of going to the bank. 銀行 has that 彳 in there. If you receive money, you should go to the bank.