In 1997, Weigert held the master class "action with effects" for the European Film Academy. In 2014, he taught a second master class for the EFA and thus became the only instructor to hold two EFA master classes in his lifetime. He also taught digital compositing classes at the Art Institute of California - Los Angeles, was speaker at the iHollywood Forum and the Producers Guild of America (PGA)'s first "produced by" conference in Los Angeles in 2009. He also spoke at the Society of Motion Picture and Television Engineers (SMPTE) conference, SIGGRAPH Los Angeles and Vancouver conferences, FMX Germany, the University of Applied Sciences in Salzburg, Austria and the HPI School of Design Thinking at the Hasso Plattner Institute, Berlin