Sen Conway has introduced SB0017:
http://mgaleg.maryland.gov/webmga/frmMain.aspx?pid=billpage&tab=subject3&id=sb0017&stab=01&ys=2015RS
http://mgaleg.maryland.gov/webmga/frmMain.aspx?pid=billpage&tab=subject3&id=sb0017&stab=01&ys=2015RS
Authorizing a Baltimore City school police officer to carry a firearm on the premises of a Baltimore City public school and any other property used for an educational purpose owned, leased, or operated by, or under the control of the Baltimore City Board of School Commissioners; etc.