1 - Can say a few words and phrases, but severe pronunciation challenges make speech very difficult for others to understand.
2 - Can express self, but pronunciation challenges necessitate strong concentration on the part of the listeners and frequently leads to mis- understandings.
3 - Can express self, but pronunciation challenges necessitate some concentration on the part of the listeners and occasionally leads to mis- understandings
4 - Can express self with good pronunciation that seldom leads to mis- understandings, though listeners may detect a non-standard accent and occasional intonation pattern differences.
5 - Can express self with pronunciation and intonation similar to other proficient speakers.