"It isn't necessarily good for a child to never be scolded and only receive praise."
"It isn't necessarily good ~" 「〜が必ずしもいい事ではない」
"for a child to never be scolded and only receive praise" 「怒られないよう良い子でいること」
"never be scolded" 「怒られない」
"only receive praise" 「褒められてばかり」・「いい子でいる」