News high or low

Why some site calassify some news as high effect
While in other forex sites same news classified as low effect

I use either Dailyfx or Forex Factory calenders. Both looks good. Recommend you to stick to on news calender.

It comes down to interpretation, but the biggest economic events should be labeled as high (events such as GDP, inflation data, central bank decisions, employment reports).

high effect = high volatility??

it means one of the sites is wrong, youll notice that from time to time.

yes if its high importance there will be a lot of volatility. a chance to win or lose a lot of money quickly.

Many thanks
Yes this may be site matter
Many thanks my friends