Kevin McCorry has the latest in the Philadelphia School District’s funding crisis. Emma Jacobs visits other districts where security has been beefed up in the aftermath of last year’s school shootings in Connecticut. Aaron Moselle meets a music studio engineer who keeps old recording methods alive. Historian Jonathan Zimmerman and WHYY’s Chris Satullo discuss how well the U.S. has lived up to Martin Luther King Jr.’s ideals. Dr. Charles McNeil wonders if young African Americans understand the impact of the Civil Rights movement.