That eternal cry of the parent and teacher, "I was young once! I know what you're going through!"
So let's take them at their word: write a story about the childhood of a parent or teacher and how they went through something similar to what Daria (or Jane, Tom, Jodie etc) went through in an episode.
It had been four years of blood and sweat, and sometimes the blood wasn't no metaphor. Doug had worked his ass off to become quarterback and football captain. He'd won the state championship and Lawndale ain't won that in twenty years. The school got most of the glory but he got just enough for that all-important scholarship.
And then Charlene got pregnant, so okay, it was Lawndale State, don't need a scholarship for that but he could still be on their team, get some more glory, go pro maybe. And if not, he'd be in college. He deserved it. No more of the rich folk looking down on the Thompsons when they hired them to do the work for them. Hell, Doug could hire his own schmuck if he was a college boy.
Then he got his grades.
Just too low to get to Lawndale State. Three seperate classes.
So he went to Janet Richards and pleaded & screamed until she looked like she was about to cry, and that did nothing, and he went to Ewing in Math and that got nowhere, and he went to Ms Li in Language Arts and she looked sympathetic.
"You're absolutely right, Mister Thompson. After all your work on the field has given this school, you should have been given some leeway in your grades."
"That's what I keep saying and they look at me like -" Like those rich folk when his dad was a bit blue, like they shouldn't just lighten up. "Like I'm asking for something I haven't earned. And I did try in class!"
Maybe he could've tried harder, but he did try, right? That should count.
"If I was principal, this school would nurture its team," said Li. "I've been teaching here for ten years and nobody has ever cared about Lawndale High until the Lions were winning. People want to hear about us then, the PTA shows up then, we get some respect then, we even get money sniffing around - I digress, Mister Thompson, but if I could help your grades, I would."
"You get it," said Doug, beaten and tired. "At least you get it."
To save face, he would claim he wasn't going to college because of the baby. Eventually he would convince himself that was indeed true, it hadn't been any failure on his part. He forgot how it had been with all his teachers except Li and when Kevin went to high school, Doug duly shoved his way into the PTA and supported the principal as loudly as possible because he knew she got it. She'd give Kevin what he was owed for what he did for them.