Formal:
* "Congratulations on your graduation! Your hard work and dedication have paid off. I wish you all the best in your future endeavors."
* "I was so pleased to hear about your graduation. This is a significant achievement, and I commend you on your success."
* "Warmest congratulations on your graduation. Your future is bright, and I'm excited to see what you accomplish."
Informal:
* "Congrats, grad! So proud of you!"
* "Woohoo! Way to go, you did it!"
* "Huge congrats on graduating! What are you up to next?"
* "I'm so incredibly proud of everything you've accomplished! Celebrate!"
If you want to be more specific:
* "Congratulations on graduating with honors! That's a remarkable achievement."
* "Congratulations on graduating from [University Name]! What a fantastic accomplishment."
* "Congratulations on your graduation! I heard you got a job at [Company Name] – that’s amazing!"
Adding a personal touch:
Remember to add a personal touch based on your relationship and your knowledge of their journey:
* Mention something specific you admire about their accomplishments or their journey. "I was so impressed with your dedication to [project/activity during school]."
* Offer your support: "Let me know if there's anything I can do to help you in this next chapter."
* Ask about their plans: "What are your plans for the future?" (But be prepared for them not to have everything figured out!)
No matter how you phrase it, make sure your congratulations are genuine and heartfelt.