An Act amending the act of March 10, 1949 (P.L.30, No.14), known as the Public School Code of 1949, in terms and courses of study, further providing for subjects of instruction and flag code.

The provided context does not include the specific policy language or provisions of HB 17. While the bill's title references amendments to the Public School Code of 1949 regarding "subjects of instruction and flag code," the details of what changes are proposed - such as which subjects would be added or modified, or specific flag-related requirements - are not described in the given information. Without these concrete details, a factual summary of the bill's mechanisms, affected parties, or policy changes cannot be created. The procedural history (e.g., committee referrals) does not substitute for the bill's substantive content. For an accurate summary, the full text of the bill or detailed explanatory materials would be required.