in good stead

Reader's Digestは宣伝の個所もだいたい読んでいます。次の宣伝記事は６月号からの引用です。
Lorna Whiston's REAL READING System(TM) encourages higher comprehension skills such as deduction, hypothesis and inference. This stands the students in good stead for their reading comprehension papers in school.
"stead" の単語は "in stead of" での用法しか知りませんが、上の "in good stead" はどんな意味になるのでしょうか？
  辞書を見ると "stand someone in good stead" と言うイデオムがあることが分かりました。
・Oxford English Dictionary: Be advantageous or useful to someone over time or in the future: 'his early training stood him in good stead’
・Cambridge English Dictionary: If an experience stands a person in good stead, it is or will be of great use to them: Getting some work experience now will stand you in good stead (for) when you apply for a permanent job.
・McGraw-Hill Dictionary of American Idioms and Phrasal Verbs: [for something] to be of great use and benefit to someone. I know that my large vocabulary will always stand me in good stead at college. Any experience you can get in dealing with the public will stand you in good stead no matter what line of work you go into.