Dream About School Needles Water Friends Phone Dog Knife Principal Hass Class

I was dreaming that i was at a school that i didnt regognise. There were a buncg on needles on the ground and in another section of the room there was water. I was with two of my friends. I realised i forgot to take my phone so i retrieved it. Then somewhere in my sleep it changed to another scene where my dog and another dog were playing with a knife the another dog made my dog bled. Another dream i had last night was where a "principal" came to me, i need to sign up for something thats 13 plus in real life, but im not 13 yet so i asked if i could still join the club and she said yes. The last dream i had was where i was also in school and i was in a room full of people we were getting ready for our first class which was Hass and i couldnt find my friend as she was there.