Unfortunately, probably not.  "Looking forward to all I had to offer the company" seems too general to be enforced and isn't specific to paying for a Master's program.  California Civil Code Section 1624 dictates which contracts need to be in writing and includes contracts which cannot be performed within a year.  It appears as though a Master's program probably cannot be performed within a year, so they probably have a good defense in that any agreement to pay for your Master's program would probably need to be in writing. As unfortunate as that is, I don't think the law gives you much recourse in this situation.