I'm writing a Teddy fic right now, and as I was looking through the Lexicon, it mentioned that Teddy was in his seventh year at Hogwarts in 2017. Then it went on to tell me that Rose, Albus Severus, and Scorpius all began their first year in 2017. Then *drumroll please*, it told me that Teddy was off to see Victoire in that same year, meaning he was no longer in school.

Therefore, I am utterly befuddled, and would like to ask the help of Next Gen professionals. When exactly was Teddy in his seventh year, and how old was Scorpius in relation to him?