Jo Billard
UEB, or unified English Braille, began around 2013, and since then there is no Grade 2 Braille. It's either contracted or uncontracted, and a lot of the symbols have changed.
Vsevolod Popov
Vsevolod Popov
Jo Billard
Grade 3 Braille was a thing in the days before notetakers and computers. If you attended university or maybe public school, you sure weren't going to use a Perkins Brailler to take notes. Grade 3 Braille was extremely useful when using a slate and stylus because it's faster and the spacing is different, so certain words are written with no spaces between them. It's not needed anymore with the use of technology and quieter ways of typing in Braille.
Tracey D
Believe it or not, grade-three braille is not a joke—it's really a thing! I posed a question to one of the groups of my friends from the US about grade-three braille one time, and they didn't seem to know much about it.
Capitan Slap A Hoe
No, grade 3 braille is not the same as computer braille. It’s just a more contracted braille system as he mentioned earlier. 
Vsevolod Popov
It seems like no, I heard that it is the most contracted english braille available.
Meg
Isn’t grade 3 Braille the same as computer braille? 
Capitan Slap A Hoe
Grade 3 braille exists, however, it is not in common usage. In fact, I don’t know anywhere where grade 3 braille is used.