; (4) $107,000,000 shall be available to implement projects to demonstrate how a comprehensive approach to serving homeless youth, age 24 and under, in up to 25 communities with a priority for communities with substantial rural populations in up to eight locations, can dramatically reduce youth homelessness: Provided, That of the amount made available under this paragraph, not less than $25,000,000 shall be for youth homelessness system improvement grants to support communities, including but not limited to the communities assisted under the matter preceding this proviso, in establishing and implementing a response system for youth homelessness, or for improving their existing system: Provided further, That of the amount made available under this paragraph, up to $10,000,000 shall be to provide technical assistance to communities, including but not limited to the communities assisted in the preceding proviso and the matter preceding such proviso, on improving system responses to youth homelessness, and collection, analysis, use, and reporting of data and performance measures under the comprehensive approaches to serve homeless youth, in addition to and in coordination with other technical assistance funds provided under this title: Provided further, That the Secretary may use up to 10 percent of the amount made available under the preceding proviso to build the capacity of current technical assistance providers or to train new technical assistance providers with verifiable prior experience with systems and programs for youth experiencing homelessness