NCSY has changed drastically over the decades.
I was a member 50 years ago, and it served as a social networking mechanism for OOT orthodox Jews. The word Hareidi was generally unknown outside the NY Yeshiva world. NCSY’s goal was to develop observant adults who could lead OOT orthodox synagogues in the future. The vast majority of members were public school kids with some day school kids (usually the children of the LOR). This a a place Eurotraditional parents could send their children to meet eligible Jewish mates and the food at weekend events and conventions would be kosher. It was not so frum. Local chapters in OU shuls held mixed dances, etc. The goal was tp get NCSYers to continue Jewish education by steering them to YU or Stern, later to Touro.
Each 10 years since, NCSY has moved farther to the right and has far more members not form public schools. This is not because NCSY doesn’t appeal or reach out to them, but because the subsequent generations to the post WWII baby boom of orthodox or Eurotraditional OOT Jews left the public schools at cities became more Nd more minority and public education went down hill.
In the 1970s there was a wave of advisors from Shor Yoshuv and Rebitzen Friefelds (sp?) in Far Rockaway, the 1980s brought the Chofetz Chaim crowd. Then there were the sexual scandals that forced out certain leadership. Ever since the Founding Director Rabbi Pinchas Stolper moved on the organization has drifted right.
That said chapter advosors who are paid are hired and paid by individual synagogues and OOT they are not amenable to advisors trying to make kids more frum than their parents and wanting to move their shuls to the right.
NCSY is an arm of the UOJCA. It is NOT an umbrella organization for frum young people. Originally it brought together new chapteres in UO synagogues, YUSCY (Yeshiva University Synagogue Youth) and from Chicagoland- TSY (Traditional Synagogue Youth) many of whose congregations had an orthodox siddur but no mechitza.
<y oldest grandchildren are now 3rd generation members, but they live OOT and are on the more observant side of membership. I have been a member of the adult board and the National Honor Society more more than 40 years. It has an important place in making sure that orthodox communities can survive OOT, but it is not a place for yeshiva yungerleit and Bais Yaakov girls to spend time.
Yes, they are a Kiruv organization but their is the need to understand the politics of association. If you consider yourself a Black Hatter and not Kipah Serugah, NCSY is not the place for you.