I need help finding sheet music for the piano at an intermediate level.?

Sheetmusicfox.com has lots of piano music for free. Search for Sonatinas for easier stuff.

Try musicnotes.com
We just purchased several pieces from "The Corpse Bride" for my granddaughter. She's an intermediate piano student, also.
You'll need to ask your mom & dad, as they will have to pay with a credit card.
After your purchase, you simply print it from your computer/printer.
It's 20 miles to the nearest music store, so this is much better than paying for the music and the gasoline to go get it!

Try 8notes.com

Movie themes :http://hsudarren.wordpress/music-scores

Clayderman鈥檚 :http://www.geocities.com/pianoangel_clas...

Classics & 20鈥檚:http://www.easysheetmusic.com/

Maksim鈥檚 music:http://maksimmrvica.com/downloads/scores

Classical music:http://www.allpianosheetmusic.com/

Classical music:http://pianophiles.com/

Japanese anime:http://ichigos.com/sheets

Japanese anime:http://gh.ffshrine.org/sheet-music.php

Japanese anime:http://www.alphatrance.com/0engine/music...

Popular songs :http://words3music.100free.com/sheets.ht...

Popular songs :http://www.my-piano.blogspot.com/

Popular songs :http://www.emodb.com/

Japanese anime:http://www.pianomoz.com/howl-moving-cast...

Classical music:http://www.sheetmusicarchive.net/

Japanese anime:http://animescores.com/SheetMusic/index....

All sorts of music:http://www.take-a-piano-sheet-music-brea...

Mostly animes :http://www.vanillafrost.com/surreal/

Christian songs:http://home.swipnet.se/capotasto/

Movie themes :http://www.pianothemes.com/index.html

Popular songs :http://www.theperfectscores.com/free-pop...

Christmas songs:http://www.fortepiano.szm.com

Popular songs:http://www.pianotte.szm.com/

Popular songs:http://my-piano.blogspot.com/

You can try playing all sorts of pieces/songs.
All of these are free sites. Hope you'll like them:)