That is the point. The alt-text is referencing a reoccurring joke in the show where one of the characters would compare their class to the normal class he used to attend.
Yes, but it might have worked better if it was plausible that ANYBODY used Encarta 2005. Nobody did, because Wikipedia was already much better than Encarta at that time.
Nobody uses or teaches Wikipedia use in schools. Referencing Wikipedia as a source is a good way to get a failing grade on a paper. Use of encyclopedias - electronic, like Encarta 2005, or paper, like Encyclopædia Britannica - is taught, and referencing encyclopedias is acceptable (although not encouraged).
In other words, what's your point? The comic shows a school bus taking children to a source that's never
used in schools, and the alt text shows a kid whining about how at his old school, they used to use something that's never
used outside of schools. It's a joke. It doesn't have to be realistic.