The phrase "attach considerable" is correct and usable in written English.
It can be used when discussing the importance or significance of something that is being added or connected to another element.
Example: "The researchers decided to attach considerable importance to the findings of the study."
Alternatives: "assign significant" or "attribute substantial".
College Prep Surveys show that college admissions offices attach considerable importance to grades in college prep courses.
For the medium-term, we also attach considerable importance to the objectives of a flexible framework and evolutionary potential.
"Apart from anything else, the fact that an informed political debate has taken place is a factor to which the courts – including particularly the European court – will attach considerable weight when determining whether it is appropriate for them to intervene".
Scientists trying to assess Dr. Hauser's work are likely to attach considerable weight to the exact nature of the problems Dr. Smith says were found by the faculty committee.
German Business Schools attach considerable importance to entrepreneurship and rank it highly on the curriculum.
Increasingly, governments worldwide attach considerable importance to monitoring and assessing forest biomass and carbon storage against a background of global climate change.
Bratza attached considerable significance to the fact that ADI could spread its message by other means.
MR. AULETTA attaches considerable importance to what he calls enormous "trading losses" generated by Mr. Glucksman and his traders just before Lehman was sold.
Like Mrs. Stetson, she attached considerable importance to the passage "Science and Health" which forecast a day when babies would come into the world without the prior complicity of any earthly father.
Both generals attached considerable importance to the intervention of Turkey, their opinion being that Turkey was likely to act in favour of the Western Powers only if Russia herself join in.
Like Erikson before her, she attaches considerable significance to Luther's troubled relationship with his father, Hans Luder, the metal worker and miner from Mansfeld, against whom he rebelled by entering the Augustinian order in Erfurt in 1505, instead of pursuing the career in law for which he was intended.
