This site is a much more personal site and deals with the Kamloops Shuswap Indian Band. There are personal stories about language acquisition (before and after residential schools), as well as some of the positive things the residential schools offered (such as getting an education and learning English).
This site (even though it is a bit out of date), shows the different Shuswap tribes. There is a chart showing the populations of each tribe and how many native Secwepemc language speakers are left in each band. Alkali lake has the strongest number of native language speakers with 95 (which is 14% of their population. I’m sure that the numbers are much lower now but it would be interesting to investigate as to why their number of native speakers is so much higher than the other tribes.
In addition, this site offers more information on traditional Shuswap history and their culture.