Recently,　there　is　a　global　outbreak　of　COVID-19.　As　a　result,　many　students　had　to　choose　distance　education.　In　this　situation,　learning　in　a　group　is　more　difficult　to　realize.　What＇s　more,　teamwork　is　a　vital　part　of　learning.　Because　it　is　beneficial　for　students　to　learn　how　to　work　together　in　the　future.　For　example,　if　the　major　of　students　is　software　engineering,　working　in　group　is　their　daily　working　way.　When　they　are　students,　mastering　how　to　work　in　group　is　crucial　to　their　careers.　Consequently,　it　is　more　important　to　find　methods　to　study　in　groups　effectively　now.　The　objective　of　this　article　is　to　find　the　effective　means　of　group　learning　which　can　help　students　to　improve　their　grade,　especially　in　software　engineering.　In　addition,　this　article　will　analyze　the　method　according　to　the　following　aspects,　the　count　of　issue,　the　count　of　the　commit,　the　responses　of　students,　the　help　hours,　the　meeting　hours,　the　personal　meeting　hours,　the　count　of　the　team　and　the　sex　ratio　in　the　team.　Data　visualization　and　Machine　learning　will　be　used　to　deal　with　the　relevant　data.　The　effective　means　will　be　found　by　analyzing　these　data　and　other　references.　©　2021　IEEE.