“Euphoria” is an American teen drama television series created and written by Sam Levinson. It premiered on HBO in June 2019 and has been widely acclaimed for its depiction of teenage life, including topics such as drug addiction, trauma, and mental health.

The show follows the lives of several high school students, including two twin sisters named Cassie and Lexi. Cassie and Lexi are played by real-life twins, Maude and Alexa Apatow, respectively. They are both students at the same high school as the other characters in the show.
Throughout the first season of “Euphoria,” it is not explicitly stated what grade the twins are in. However, there are several clues that can help us make an educated guess.
Firstly, we know that Cassie and Lexi are both in the same grade, as they are in several classes together and are often seen hanging out with each other at school. This rules out the possibility of one twin being a grade ahead or behind the other.
Secondly, we know that most of the other characters in the show are either in their junior or senior year of high school. For example, Rue, the main character, is a junior, and her love interest Jules is a new student in the same grade. Meanwhile, the character of Nate is a senior and has already been accepted to college.
Given these clues, it seems likely that Cassie and Lexi are also in their junior year of high school. This would make them around 16 or 17 years old, which is consistent with the ages of the other characters in the show.
However, it’s worth noting that this is just an educated guess based on the information we have. The show does not explicitly state the twins’ grade level, and the creators may have intentionally left this ambiguous to allow viewers to draw their own conclusions.
In conclusion, while the show “Euphoria” does not explicitly state the grade level of the twin sisters Cassie and Lexi, it is likely that they are in their junior year of high school based on the clues presented in the show.