Answer:
Put tie around the neck with the right side twice as long as the left.
Right over left and under, over again and under (loosely), this time bringing the end through the gap in the centre to the front and tucking it through the loop just created.
Tighten gently.
Hope this helps, did my school tie this way for years.
I can also tie a cravat and a bow tie!! multi-talented Eh!