I don't know the right words to say thank you, but I do know the right reward for you guys Brace yourself tight because a big bonus is coming to sweep you away!"We are proud of you" is common and correct It means we are proud of you for your accomplishment The others are probably incorrect forms of that Rarely someone might want to say "proud with you" — ie "We share your pride in your school's accomplishment"I am so proud of you and the person you are becoming!
50 Proud Of You Quotes To Celebrate Their Accomplishments 21