Melt the chocolate according to the directions on the package. Dip one end of the pretzel rod into the chocolate, twisting it to coat. Gently tap off any excess chocolate, then place it on the parchment paper. Add sprinkles immediately. Repeat with remaining pretzels until the chocolate is used up. (You may need to reheat the chocolate part way through, carefully do so in 30-second intervals, stirring in between.)
Place the tray into the refrigerator for 1 hour. Once the pretzels have hardened, you can handle them.
Note: Adults should handle the melted chocolate and should supervise throughout the process.