Kevin Barrett left the Hurst Green college in 1998 and is currently with Saracens.
"I am really excited to be captain", said Kevin, 29, from Berkshire. "Ben Ryan, (the England Sevens coach) gave me the news and I feel very privileged but we have lots of leaders in the team, like Ben Gollings, Chris Cracknell, Isoa Damudamu and James Rodwell so I'm hoping I can call on all of them.
"I've been playing sevens for a while now but to go out as captain is always a proud moment and I'm really enjoying it."
Last season, Kevin helped England to win trophies at the Wellington and London legs of the IRB Sevens World Series.
This is not the only good news for Stonyhurst rugby this season, with another former pupil, Joe Ansbro, winning his first cap for Scotland 'A' against Romania and two of the current Stonyhurst 1st XV (James Morris and Harrison Collins) representing Sale Sharks Academy.
Simon Charles, Director of Sport at Stonyhurst said: "This is a truly fantastic achievement for Kevin and everyone at the College is absolutely delighted and immensely proud of him".
There are eight tournaments in the Emirates Airline IRB Sevens series and two were played last month, in Dubai and South Africa.
In Dubai, England again won their pool, beating Kenya, Russia and the USA. They then beat Argentina 17-12 in the Cup quarter final, before losing 19-28 to Samoa.
In South Africa, England won their pool, beating Argentina, Scotland and Tunisia. They then lost 19-22 to New Zealand which put them in the semi-final where they beat Australia 24-5 before taking the Plate beating South Africa 21-7.
The remaining six tournaments will take place in New Zealand, Australia, Hong Kong, England, Scotland and the USA. Each tournament carries a points system and overall, England currently lie third on 28 points behind Fiji (36) and New Zealand (48).
For more go to www.irb.com/irbsevens/schedule.ht