Are Prince William's classes at Cambridge are keeping him away from family time? Kate Middleton and their baby son Prince George spent the week vacationing in the Caribbean, and Kate Middleton may be without her prince this Valentine's Day.

E! News reports that Kate Middleton and Prince George spent the week vacationing in Mustique in the Caribbean, on their annual family trip for her mother Carole Middleton's birthday. Kate Middleton and 6-month-old Prince George traveled to the island of Mustique, and were joined by her parents Carole and Michael Middleton, brother James, and sister Pippa and her boyfriend Nico Jackson.

Though Prince William joined the group last year at the same villa, he couldn't take a Caribbean family vacation this year, according to Us Weekly. Prince William is enrolled at Cambridge University for a 10-week program to study agricultural management, which he began in December.

Prince William also might not be around for Valentine's Day. The Duchess Of Cambridge will be spending Valentine's Day at a London high school, Clarence House revealed today on Twitter, The Huffington Post reports. Kate Middleton will be visiting Northolt High School to officially open the school's ICAP Art Room, but Prince William will still be in class.

The Duke of Cambridge's program is organized by the Cambridge Programme for Sustainability Leadership and includes seminars, lectures and meetings, which "will draw on the strengths of academics across the university," according to a palace press release, E! News. Prince William's program at Cambridge ends in the middle of March. The classes have been designed help Wills have "an understanding of contemporary issues affecting agricultural business and rural communities in the United Kingdom."

Hopefully Prince William will be able to join his Duchess for the evening of Valentine's Day!