The Short Version
Each component of this claim is well-documented: Inner Engineering is a flagship Isha Foundation program offered in multiple formats, youth and children's programs (including summer camps and student-tailored courses) are recurring offerings, and Rally for Rivers was a verified large-scale environmental campaign corroborated by an independent academic source. The only notable caveat is that Rally for Rivers evidence in the record largely dates to 2017–2019, making the present-tense framing slightly overstated regarding its current operational scale.