Have you graduated college? I got my bachelors in 2016. 
I am still doing my bachelors actually. The term "bachelor" used to refer to a knight bachelor who was too poor or young to father vassals under his own banner.
Wow. I never knew that.  What other titles did knights have back in the day? 
A few other I can't think of right now. But by the end of the 13th century, the term was used by junior members of guilds or universities.
What types of guilds were there then? 
A type of guild that formed were known as confraternities of tradesmen. Which may be where the for fraternity was derived from.
What did the guilds do exactly? 
Guilds were usually organizations of a certain professional association, trade union, cartel, or even a secret society.
So basically the Masons were a guild?
and to retain ownership of tools and the supply of materials, but were generally regulated by the city government. A lasting legacy of traditional guilds are the guildhalls constructed and used as guild meeting-places. Guild members found guilty of cheating on the public would be fined or banned from the guild. 
Typically the key "privilege" was that only guild members were allowed to sell their goods or practice their skill within the city. There might be controls on minimum or maximum prices, hours of trading, numbers of apprentices
levels in the framework (sometimes two levels where non-honours and honours bachelor's degrees are considered separately), although some qualifications titled bachelor's degrees may be at other levels (e.g., MBBS) and some qualifications with non-bachelor's titles may be classified as bachelor's degrees (e.g. the Scottish MA and Canadian MD).
The term "bachelor" in the 12th century referred to a knight bachelor, who was too young or poor to gather vassals under his own banner. By the end of the