This lesson (the "School" lesson) is supposed to be about accusative case, so why is there a question featuring (what I understand to be) the dative case in here? We haven't even learned about dative case yet. Absolutely zero was said about dative case in the grammar lesson in the "tips" section at the beginning of the lesson. This is very, very, very offputting. The grammar tips for this lesson were already poorly composed and sorely wanting for information enough as it is. We don't need confusing curve balls on top of that.
The accusative is "litteram (sg), litteras (pl)".
The dative is "litterae (sg), litteris (pl)".
"Studeo" takes the dative, not the accusative.
After considerable digging around, I agree that this is correct. My concern is that this is too soon in the lessons for verbs with dative usage. With zero grammar to complement the lessons. I find it best to have a printout of the declensions to make sure I understand what is going on. But it never occured to include a list of special usage verbs. Someone with NO latin could really get hung up on this.