First came The Kids Of Degrassi Street in 1979 and ran untill 1985. TKODS only had 26 episodes only then the 'kids' went on to what we know as Degrassi Junior High. The school used for TKODS was a school that went by the name of Dundas Junior School. DeGrassi Street is a real street in downtown Toronto area. IT was filmed on and around the street and a school about one block away but they uesed two different school's for the show i think. DeGrassi Grocery is a real Grocery store but the sign was good and a classic but now it's new and ugly they just should of left it the way it was. . 
Degrassi Junior High ran from 1986 to 1988 had 42 episodes and they covered grade 8, second term in grade 8, and grade 9. Some of the characters from TKODS played different characters in DJH. DJH was shot at a school by the name of Vincent Massey Junior High School. DJH was on a street called Daisy Street( 68 Dasiy Street in Etobicoke, Toronto.
Degrassi High had 28 episodes and that covered two high school years. DH ran from 1988 to 1989. The grade 9's went to DH and some seniors had a story line but not a lot. Most of the people from DJH went to DH because remember DJH burned down. DH was shot at a school that goes by the name Centennial College (the high school used for DH).
Schoo's Out was the last show they ever did. It had SOME not even half of the 'gang' in. In there was Joey Jeremiah, Caitlin, Wheels, Snake, Lucy, Spike, Tessa, Simon, Alexa, Allison, Amy, Bronco, and i think thats it. School's Out was aired on CBC in 1992, as the rest of Degrassi but it was called ' The Movie Of The Week'(MOW"S).
I don't know much about Degrassi Talks but i do know about the 6 shows they did and who hosted them. 'Degrassi Talks' was a docurmetery about REAL teen's going through these problems. Spike, Wheels, Kathleen, Joey,Yick, Caitlin are the hosts of  one show each and one topic each. Spike hosts on Sex, Wheels hosts on Alcohol, Kathleen hosts on Abuse, Joey hosts on Depression, Yick hosts on Drug Abuse, Caitlin hosts on Sexuality. Degrassi Talks ran after School's Out and it ran in 1992.
Degrassi:The Next Generation is all about 'life' in the twenty-first century as a pre-teen and a teen( in grade 7 and 8, but now 7,8,and 9 ). DTNG has two of my favorite people back as renturning cast. Amanda Stepto( Christine" Spike"Nelson) and Stefan Brogren( Archie"Snake" Simpson) but on DTNG they are know as Ms. Nelson and Mr. Simpson. DTNG did for the first season 15 episodes. Mother and Child Reunion was the premise for DTNG. It was an hour long (2 episodes) and can you guess who showed up? Will Joey Jeremiah, Caitlin Ryan, Derek 'Wheels' Wheeler, Lucy Fernandez, Christine'Spike' Nelson of corse,Liz O'Rourke,Yick Yu, Trish, Allison, Diana Economopoulos, Mr. Raditch( renuting cast), Maya,Alexa, Simon Dexter, and Dawayne all showed up for the BIG 10th anniversary high school reunion held at Degrassi Commiuty School.
The last DJH entittled "Bye-Bye Junior High"
The last DH entittled " One Last Dance"
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