A post shared by Sandro Marcos (@sandromarcos7) on Dec 11, 2017 at 8:00pm PST

Ferdinand Alexander 'Sandro' Marcos has earned his master's degree in Development Studies from the London School of Economics and Political Science.

The 23-year-old eldest son of former Senator Ferdinand 'Bongbong' Marcos Jr. with wife Louise Araneta on Tuesday shared the news on Instagram, thanking his proud parents.

MSc in Development Studies ✅. Finally, the conclusion to endless sessions in the library until early morning. At the end of the day, I could not have done any of this without these two people by my side. Thanks Mom and Dad for the constant support (and occasional push). Never going to forget everything I’ve learned from this amazing university, on to the next challenge! 🎓

A post shared by Sandro Marcos (@sandromarcos7) on Dec 11, 2017 at 8:00pm PST

Marcos Jr. also shared a photo his son's graduation rites, adding the hashtag #ProudParents

Sandro's graduation rites at @londonschoolofeconomics : Masters in Development Studies #ProudParents

A post shared by Bongbong Marcos (@bongbongmarcos) on Dec 12, 2017 at 9:37pm PST

Marcos Jr., a vice-presidential candidate in the 2016 elections, faced controversy in 2015 after questions were raised about his academic credentials.

A report by online news site Rappler in February 2015 revealed that the senator's name does not appear as among those who completed their degrees, based on the records of both Oxford in England, and Wharton in the US, contrary to what was stated in Marcos' resumè posted on the Senate website that he graduated from the two prestigious institutions.

Marcos Jr. would later tell reporters on March 2, 2015 that he got a diploma from the University of Oxford in England but never finished his master’s at the Wharton Business School, in response to the investigative story that raised questions about his academic background.

• Bongbong insists he got 'diploma' from Oxford, did not finish Wharton

His camp would later correct his resumè to read that he finished a Special Diploma in Social Studies from Oxford University (not Bachelor of Arts in Political Science, Philosophy and Economics), and did Graduate Coursework in Business Administration from the Wharton School of Business in University of Pennsylvania, USA.

In an interview on DZMM during the 2016 election campaign, Marcos Jr. said his special diploma from Oxford was the same as a bachelor's degree .

• Marcos: Special diploma from Oxford is same as bachelor's degree