Today was the Culture fFestival day.

However we needed to see 30swatch 30 second short movies and performances so we were not free.First Icouldn't explore the festival right away. First of all, I will explain what we will do indo at a Culture fFestival.

I think you mean "short 30 second movie clips"? Don't know if it's one or many (assuming more than one so pluralized it). I think you mean you had to watch the videos/performances before everyone could participate in the festival.

There are “exhibitions” in each class.”e "Exhibitions”are such as Haunted hHouses, photo spots, gambling housecasinos, and so on are held.

Also pPeople in each class made video inalso made a 30 seconds video and advertised their class by watchingshowing the movie. ¶
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For example, they performed characters that is named 『愛♡スクリーム』and japanese fashion to advertiseddid a popular performance called "Love ♡ Scream" which is (was?) popular in Japan.

"Love ♡ Scream" (if you want English - otherwise the Japanese is ok)
or "Ai ♡ Scream" (but honestly this sounds funny - like "ice cream")

(『愛♡スクリーム』 is game and anime from Lovelive. )The anime is called "Love Live!" and the game is from the song. The students were advertising themselves as characters in the show.

I am probably not young enough to explain this correctly. Hopefully this is closer to what you wanted to say.

I was surprised thatby the high quality videos of first students in this year is high quality.this year's first year students.

Therey were performance ing outside and we watched onfrom the blue seat,s. But it was not easy for me to watch it, so I talkedhard to see so I was chatting with my friends.